Tool Number: J-44571 Tool Name: REVERSE INPUT CLUTCH SEAL PROTECTOR Applications: 1999 and Previous 4L60/4L60E (700R4) 1999 and Previous 4L60/4L60E (700R4). The reverse input clutch piston assembly on the 4L60 and the 4L60E utilize an outer lip as well as an inner hub lip seal. This two piece is designed to protect the outer seal and the inner seal from damage during assembly of the reverse input clutch piston into the drum assembly...